This would make a great topic for a research project but as far as I am aware, a comprehensive worldwide analysis has not yet been done.

I can only provide a brief sketch with references for further reading:

~ 1500 â€“ 1000 B.C. - Egypt, Greece, Mesopotamia For more on Greece I recommend The Awakening of the Greek Historical Spirit by Chester Starr.

~1200 B.C. - ChinaMichael Carr has documented evidence that the transition occurred in China roughly contemporaneously with Greece. See "The Shi â€˜Corpse/Personatorâ€™ Ceremony in Early China" in Reflections on the Dawn of Consciousness.

~ 500 - 1000 ? - AmericasMuch more research needs to be done here, but evidence suggests the transition occurred more than a millennium later in the Americas. Brian McVeigh will be discussing this as part of a new book he is working on.

~ 1500 ? - Isolated locations such as Easter IslandSee Brian J. McVeigh - "Julian Jaynes and Neurotheology"This will be touched on in McVeigh's forthcoming book as well.

~ 1800 - 1900+ - Isolated tribes in Africa, the Amazon, Andaman and Nicobar Islands, and Papua, New GuineaFor more on the evidence for bicameralism in tribes see Primitive Mentality by Lucien Levy-Bruhl, The Julian Jaynes Collection, and the "The Mentality of Pre-Literate and Pre-Modern Peoples" section of this forum.